Most screen printing on garments is done with wet ink going onto wet ink. Certain jobs and most dark garment prints need to have key colors (such as white) dried or cured before another color can print on-top of it.
On an automatic press a flash-curing heater replaces one of the print heads. Some jobs also need a short cool-down period before the next color is printed. Therefore, what appears to be a simple six color design with one flash-cure would need a minimum of eight printing stations – six for the colors, one for the flash heater and one for the cooldown.
Flash-curing will often slow the production cycle of the job.